ASN Wikibase Occurrence # 59081
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| Date: | 03-APR-2009 |
| Time: | 17:53 LT |
| Type: |  Cirrus SR22 |
| Owner/operator: | Satsair LLC |
| Registration: | N509SR |
| MSN: | 2180 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Ponce de Leon Blvd, North Port, Florida -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Fort Myers-Page Field, FL (FMY/KFMY) |
| St. Petersburg-Clearwater International Airport, FL (PIE/KPIE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
About 10 minutes after takeoff, when the airplane was in level cruise flight, the engine lost power. The pilot performed a forced landing to a road, which resulted in minor damage to the airplane when the right wing impacted a road sign. An initial examination of the engine revealed a hole in the upper deck in the vicinity of the Nos. 5 and 6 pistons. Further examination revealed that both of the No. 6 connecting rod bolts were fractured. One bolt was missing the self-locking nut, and fretting adjacent to the bolt hole on the split-line face of the connecting rod indicates that the bolt was probably not tightened with sufficient torque and backed off the bolt. The bolt then likely backed out of its hole on the connecting rod, enabling the cap to hinge open, and the loading of the other bolt in tension and bending to the point of overstress. The connecting rod then separated from the crankshaft and punched a hole in the crankcase.
Probable Cause: Inadequate torque on one of the No. 6 connecting rod bolt retaining nuts, which resulted in the connecting rod's separation from the crankshaft and a subsequent total loss of engine power.
Sources:
NTSB ERA09FA228
Accident investigation:
 |
|
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2009 23:10 | slowkid | Added |
| 06-Apr-2009 10:13 | slowkid | Updated |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 01-Apr-2023 19:41 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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